Digital Combat Simulator World (DCS World) is a free-to-play digital battlefield, focusing on military aircraft simulation. It includes a FREE TF-51D and an Su-25T attack aircraft.
DCS World 2 requires DCS: Nevada Test and Training Range (NTTR) terrain module, that includes the largest contiguous air and ground space available for peacetime military operations in the free world. The NTTR land area includes simulated air defense systems, mock airbases, and several target ranges. The NTTR was also used for nuclear testing. Today, it is home to RED FLAG and other military exercises that include countries from around the world. The NTTR map for DCS World 2 includes Nellis AFB, Creech AFB, McCarran International Airport and the infamous Groom Lake AFB (aka Area 51). This map also includes the city of Las Vegas, McCarran International Airport, and Hoover Dam.